Chaffer for thrashing-machines



(No Model.)

R. HOLMES.-

GHAPPBR POR THRASHINGMAGHINES.

Patented Nev. 19, 1895.

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UNITED STATES j R on E Rr .noL .wr-E s,1 or.

PATENT OEiucE;v

DANYILLE, ILLINors CHAFFER Fon THRAsHlNc-MACHINES.

sPEcIFIcATIoNIfm-ming part ofLetters Patent No. 549,918, dated November 191895.

' Appumionneanmhse,1895. sesame-543,786. momen.)

To all whom) it may concern.-

Beit known that I,RoBERrHoLMEs,of Danville, in the county of Vermilion and State of Illinois, have invent'ed'certain new and useful Improvements in Chalers for 'Thrashing-Machines, of which the followimds a specification.V y 7. In thrashing Wheatit Iis desirable to use a perforated chatter. A slatted-chaier with large spaces'between the slats is vbettol. fr

oats, and barley requires a condition between' that of Wheat and oats. i This invention is ldesigned to provide a chaffer lthat-'may be adjusted tomeet the requirements of different kinds and conditions of grain. It is exempliiedin the structure heres' inafter described, and it is defined in the apfv pended claim. r In the drawings forming part of this specifi# cation, Figure 1 is a plan ofy a. chaier con'- 'structed 1n accordance Fig. 2 is vertical section on line X in Fig..

1, showing-'the chatter in condition to cleanV wheat. Fig. 3 is a. similar section on the 'same line, showing the slats arranged to clean oats.

The chatter consists of a frame and a set of parallel transverse slats pioted inbearings in t-he frame and notched in their edges in such manner that the notches of each edge of each slat coincide with the notches of the adj oiningedge of the slatnext adjacent. The

slats are of a Width to cover the bottom of the chaer when 'spread outor disposed horizontally, and they are sopivoted in the frame that the rear upper edge of each will slightly overlap or at least reach the front edge of the 'next-in the rear when they'are as nearly hori-l zontal as their construction and arrangement will permit, and under these conditionslthe notches combine to form what is inefifect a lar instance vis composed of side Their vedges are notched,as shown at 7,` so that the notches of each edge coincide with the notches of the adjoining edge of the slat next adjacent, and the notches of one edge off' each sla-t preferably coincide or line upWit-h spaces between notches of the opposite edge 0f the same slat. 4In votherwords, the notches on one side of a slat alternate lwith those on the other side of with my invention.

The framein this particu? pieces 1 'and 2, center piece 3, and end piecesei and 5. The slats 6 are joiunaled at ,their ends in holes x made in the end .pieces and at their centers in holes in the center piece.

the same slat, counting from end to'end of the slat. Each' slat has an arm 8, that connects pivotally `with a shifting-bari), which is supplied With a handle l0, that projects over the tail of the chatter in an accessible position'. One ot the arms 8, preferably the rea-r one, is attached t-othe shiftingbar by a. threaded bolt, and a finger-nut 11. provides ineans for l clamping the arm against the bar and holding the bar, the ari'ns, andthe vslats in any de,-

- sired position. The tailof the chatter is prei- 'erably supplied with y.rearwardlyextended.y

parallelrods 13,'1fvith which are interspersed push-bars 12,'l having teeth "14.

' The chaier is swung in the tail of va thrasher above an air-blast and is 'vibrate'd inthe ma nner common to ysuch and ,farialogou'sl devices.

When the slats are set as shown inljig. 2, the result isto produce a perforated riddle dit"- `fejing from an ordinary riddle in the irregun lar vupper surface, which tends to carry the chaff, the., more rapidly ton'ard the tail-When thecha-ier is vibrated. .IVhen the slats are Set as shown in Fig` 3, the air will pass through kthe openings betweelxslats and keep the chan.

oating along toward the tail, While the grain will have increased' facilities for passing through the' ehaier. The extreme positions shown are adapted one for wheatand the other for oats. Intermediate positions of the slatsmay be advantageous for cleaning other grain, as barley, and for treating various conditions of dierent kinds of grain,1and it isan easy mattertov get Whatever adjustment is required. j Y 'l The size and form of 'the notches may be varied to suit diier'ent circumstances, as ma Lv also the construction and proportion of Vthe dierent elements of the device. f Having thus described my ,claim as new and desire to secure by Letters "Patente A chaier comprising a longitudinally rcciprocating frame, and a set of transverse slats with notched edges pivoted in the frame in a manner to forni a perforated surface 4when the slats'are closed together, substantially as set forth.

In testimonysvhereof Iv sign my name in the presence of two subscribing witnesses. 4 ROBERT HOLMES. Attest: *l

A WM. A. MARBLE,

HARRY O. Lrrr.

invention, I

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